Liberal Glucose Control in ICU Patients With Diabetes: A Before-and-After Study

Objectives: To assess the feasibility, biochemical efficacy, and safety of liberal versus conventional glucose control in ICU patients with diabetes. Design: Prospective, open-label, sequential period study. Setting: A 22-bed mixed ICU of a tertiary hospital in Australia. Patients: We compared 350 consecutive patients with diabetes admitted over 15 months who received liberal glucose control with a preintervention control population of 350 consecutive patients with diabetes who received conventional glucose control. Interventions: Liberal control patients received insulin therapy if glucose was greater than 14 mmol/L (target: 10–14 mmol/L [180–252 mg/dL]). Conventional control patients received insulin therapy if glucose was greater than 10 mmol/L (target: 6–10 mmol/L [108–180 mg/dL]). Measurements and Main Results: We assessed separation in blood glucose, insulin requirements, occurrence of hypoglycemia (blood glucose ≤ 3.9 mmol/L [70 mg/dL]), creatinine and white cell count levels, and clinical outcomes. The median (interquartile range) time-weighted average blood glucose concentration was significantly higher in the liberal control group (11.0 mmol/L [8.7–12.0 mmol/L]; 198 mg/dL [157–216 mg/dL]) than in the conventional control group (9.6 mmol/L [8.5–11.0 mmol/L]; 173 mg/dL [153–198 mg/dL]; p

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